CN105955542A - Touch screen, manufacturing method of touch screen and display device - Google Patents
Touch screen, manufacturing method of touch screen and display device Download PDFInfo
- Publication number
- CN105955542A CN105955542A CN201610374669.6A CN201610374669A CN105955542A CN 105955542 A CN105955542 A CN 105955542A CN 201610374669 A CN201610374669 A CN 201610374669A CN 105955542 A CN105955542 A CN 105955542A
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- China
- Prior art keywords
- layer
- touch screen
- welding backing
- metal layer
- underlay substrate
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch screen, a manufacturing method of the touch screen and a display device. The touch screen comprises a substrate, wherein a welding pad metal layer is disposed on the substrate; a protective layer coats a cross section of the welding pad metal layer. According to the touch screen provided by the invention, as the protective layer is disposed on the cross section of the welding pad metal layer, the cross section of the welding pad metal layer can be isolated from an external environment through the protective layer, thus the corrosion resistance of the cross section of the welding pad metal layer can be effectively improved, and the situation that the signal transmission performance is affected due to corrosion of the cross section of the welding pad metal layer is avoided.
Description
Technical field
The present invention relates to display field, particularly relate to a kind of touch screen and preparation method thereof, display
Device.
Background technology
Along with developing rapidly of Display Technique, touch screen is the most gradually in the life of people.
At present, touch screen can be divided into according to operation principle: resistance-type, condenser type, infrared-type with
And surface acoustic wave type, electromagnetic type, shake ripple vicarious and frustrated total internal reflection optical induction type etc..
Wherein, capacitive touch screen with the touch-control principle of its uniqueness, by high sensitivity, the long-life,
The advantages such as high transmission rate, are pursued in the industry as new lover.
At present, the weld pad on touch screen (Bongding Pad) is generally by Mo (molybdenum)/Al (aluminum)
/ Mo (molybdenum) three-layer metal is made by etching technics, but, lose at above-mentioned three-layer metal
After being carved into required pattern (Pattern), the section of middle Al layer can expose in atmosphere, holds
Easily and air, steam, Cl2Form galvanic element in medium, electrochemical corrosion, corrosion process occur
As follows:
Mo→Mon++ne-；
O2+2H2O+4e-→4OH-；
Mon++nOH-→Mo(OH)n；
2Al+3Cl2+6OH-→2Al(OH)3+6Cl-；
In above-mentioned corrosion process, Al layer participates in reaction as active anode, is corrosion main body,
And the corrosion of Al layer easily affects the signal transmission performance of weld pad.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is: how to solve welding backing metal in existing touch screen
The problem that layer section easily occurs electrochemical corrosion.
(2) technical scheme
For solving above-mentioned technical problem, technical scheme provides a kind of touch screen, bag
Include underlay substrate, described underlay substrate is provided with welding backing metal layer, described welding backing metal layer
Protective layer it is coated with on section.
Preferably, described underlay substrate is divided into viewing area and is positioned at described viewing area
The non-display area of periphery, described welding backing metal layer is positioned at described non-display area, described substrate
It is disposed with transparent electrode layer, insulating barrier, metal bridge layer on the viewing area of substrate and covers
Cap rock；
Wherein, described welding backing metal layer and described metal bridge layer are identical material and arrange with layer,
Described protective layer and described cover layer are identical material and arrange with layer.
Preferably, the non-display area of described underlay substrate is additionally provided be positioned at described weld pad gold
Belonging to below layer and the supporting layer identical with described welding backing metal layer pattern, described protective layer also covers
On the section of described supporting layer.
Preferably, described supporting layer and described insulating barrier are identical material and arrange with layer.
Preferably, the thickness of described protective layer is 1.8um-2.2um, and the thickness of described supporting layer is
1.3um-1.7um。
Preferably, described welding backing metal layer includes the first metal layer, the second metal that stacking arranges
Layer and the 3rd metal level, described second metal level is positioned at described the first metal layer and the described 3rd
Between metal level, the material of described the first metal layer and described 3rd metal level includes molybdenum, institute
The material stating the second metal level includes aluminum.
For solving above-mentioned technical problem, present invention also offers a kind of display device, including above-mentioned
Touch screen.
For solving above-mentioned technical problem, present invention also offers the manufacture method of a kind of touch screen,
It is included on underlay substrate formation welding backing metal layer, also includes being formed covering at described welding backing metal
Protective layer on layer section.
Preferably, described welding backing metal layer is formed on the non-display area of described underlay substrate,
Described method be additionally included on the viewing area of described underlay substrate sequentially form transparent electrode layer,
Insulating barrier, metal bridge layer and cover layer；
Wherein, the while that described welding backing metal layer and described metal bridge layer being in a patterning processes
Be made, described protective layer and described cover layer make in a patterning processes simultaneously and
Become.
Preferably, also included before forming described welding backing metal layer: at described underlay substrate
The supporting layer identical with described welding backing metal layer pattern is formed on non-display area.
Preferably, described supporting layer makes in a patterning processes with described insulating barrier simultaneously
Form.
(3) beneficial effect
The touch screen that the present invention provides, the section by welding backing metal layer wherein arranges protection
Layer, can be isolated the section of welding backing metal layer with external environment by protective layer, such that it is able to
It is effectively improved the corrosion resistance of welding backing metal layer section, it is to avoid owing to welding backing metal layer section is rotten
Erosion affects its signal transmission performance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the touch screen viewing area that embodiment of the present invention provides；
Fig. 2 is the schematic diagram of the touch screen non-display area that embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is made the most in detail
Describe.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Embodiment of the present invention provides a kind of touch screen, and this touch screen includes underlay substrate, institute
State and on underlay substrate, be provided with welding backing metal layer, the section of described welding backing metal layer is coated with guarantor
Sheath.
The touch screen that embodiment of the present invention provides, on the section by welding backing metal layer wherein
Protective layer is set, the section of welding backing metal layer can be isolated with external environment by protective layer,
Such that it is able to be effectively improved the corrosion resistance of welding backing metal layer section, it is to avoid due to welding backing metal layer
Section is corroded affects its signal transmission performance.
Embodiment of the present invention provides a kind of touch screen, and this touch screen includes underlay substrate, should
Underlay substrate is divided into viewing area (corresponding to the viewing area of touch screen) and is positioned at institute
State the non-display area (corresponding to the non-display area of touch screen) of viewing area periphery；
Wherein, as it is shown in figure 1, be disposed with transparent on the viewing area of underlay substrate 100
Electrode layer 300, insulating barrier 410, metal bridge layer (i.e. bridge point layer) 510 and cover layer 610,
Transparent electrode layer 300 includes several touch control electrode；
As in figure 2 it is shown, be provided with light shield layer (BM) on the non-display area of underlay substrate 100
200 and welding backing metal layer 520, the section (i.e. side) of welding backing metal layer 520 is coated with guarantor
Sheath 620, is completely covered the section of welding backing metal layer 520 by protective layer 620 so that it is with
External environment is isolated, such that it is able to be effectively improved the corrosion resistance of welding backing metal layer section, it is to avoid
Its signal transmission performance is affected owing to welding backing metal layer section is corroded；
Preferably, in order to reduce patterning processes number of times, reduce cost, described welding backing metal layer 520
With described metal bridge layer 510 be identical material and with layer arrange, described protective layer 620 is with described
Cover layer 610 is identical material and arranges with layer, i.e. makes metal in underlay substrate viewing area
While bridge layer 510, the non-display area at underlay substrate makes welding backing metal layer 520, at substrate
While substrate viewing area making cover layer 610, the non-display area at underlay substrate makes guarantor
Sheath 620；
In the manufacturing process of touch screen, owing to the thickness of cover layer 610 is typically larger than metal bridge
The thickness of layer 510, poor for avoiding welding backing metal layer 520 and protective layer 620 to there is bigger section,
Prevent from binding bad, it is also possible to arrange on the non-display area of underlay substrate and be positioned at welding backing metal
Below Ceng and the supporting layer 420 identical with welding backing metal layer 520 pattern, protective layer 620 also covers
On the section (side) of supporting layer 420, by supporting layer 420 by welding backing metal layer 520
Padded, such that it is able to the thickness difference abnormity offset between welding backing metal layer 520 and protective layer 620
The section become is poor, prevents from binding bad, and such as, the thickness of protective layer 620 can be 1.8um-2.2
Um, such as, can be 2.0um, and the thickness of described supporting layer 420 can be 1.3um-1.7um,
Can be such as 1.5um, the thickness of welding backing metal layer 520 can be 0.2um-0.4um, example
As being 0.3um.
Preferably, in order to reduce patterning processes number of times, reducing cost, described supporting layer is with described
Insulating barrier is identical material and arranges with layer, i.e. makes insulating barrier 410 in underlay substrate viewing area
While underlay substrate non-display area make supporting layer 420.
Wherein, for the touch screen in embodiment of the present invention, insulating barrier 410, supporting layer 420,
Cover layer 610 and protective layer 620 all can use OC glue (such as resin material) make and
Becoming, metal bridge layer 510 and welding backing metal layer 520 can use multi-layer metal structure, its material
Material can include molybdenum, aluminum etc., and such as, described welding backing metal layer 520 can include that stacking is arranged
The first metal layer, the second metal level and the 3rd metal level, described second metal level is positioned at institute
State between the first metal layer and described 3rd metal level, described the first metal layer and the described 3rd
The material of metal level includes that molybdenum, the material of described second metal level include aluminum, will by protective layer
The section of welding backing metal layer covers such that it is able to prevent the steam in aluminium lamination therein and air,
Oxygen forms galvanic element and produces electrochemical corrosion, improves the Corrosion Protection of welding backing metal layer.
Additionally, embodiment of the present invention additionally provides a kind of display device, including above-mentioned touch
Screen.Wherein, embodiment of the present invention provide display device can be note-book computer display screen,
Any products with display function such as display, TV, DPF, mobile phone, panel computer
Product or parts.
Additionally, embodiment of the present invention additionally provides the manufacture method of a kind of touch screen, it is included in
Form welding backing metal layer on underlay substrate, also include being formed covering at described welding backing metal layer section
On protective layer.
Wherein, described welding backing metal layer is formed on the non-display area of described underlay substrate, institute
The method of stating is additionally included on the viewing area of described underlay substrate and sequentially forms transparent electrode layer, absolutely
Edge layer, metal bridge layer and cover layer；
Preferably, in order to reduce patterning processes number of times, reduce cost, described welding backing metal layer with
Described metal bridge layer is made in a patterning processes simultaneously, and described protective layer is with described
Cover layer is made in a patterning processes simultaneously.
Wherein, in above-mentioned manufacture method, also included before forming described welding backing metal layer:
The non-display area of described underlay substrate is formed prop up identical with described welding backing metal layer pattern
Support layer.
Preferably, in order to reduce patterning processes number of times, reducing cost, described supporting layer is with described
Insulating barrier is made in a patterning processes simultaneously.
Such as, for the touch screen of Fig. 1 and Fig. 2 structure, its manufacture method may include that
Step S1: first at underlay substrate 100 (such as glass substrate) one layer of black glue of upper coating
Material (such as resin) is used for forming light shield layer (BM) 200, and the thickness of light shield layer can be 1.5um；
Step S2: on the underlay substrate complete step S1 deposit layer of transparent conductive film (as
ITO material), then by photoresist be coated with, expose, develop, etch, remove photoresist after for shape
Become transparent electrode layer 300 (comprising several touch control electrode)；
Step S3: being coated with one layer of insulation film on the underlay substrate complete step S2 (can be
OC resin material), the insulation film of coating not only covers the viewing area at underlay substrate, also
Covering the non-display area at underlay substrate, the thickness of insulation film can be 1.3um-1.7um,
Can be such as 1.5um, by this insulation film is exposed, after developing process, at lining
The viewing area of substrate forms insulating barrier 410 (bridge electrical insulation layer), and underlay substrate is non-simultaneously
The supporting layer 420 identical with welding backing metal layer pattern is formed at the bongding pad of viewing area；
Step S4: form metal foil by depositing operation on the underlay substrate complete step S3
First film, such as, can deposit one layer of Mo layer, then one layer of aluminum metal layer of deposition, then sink
Long-pending one layer of Mo layer, the metallic film of deposition not only covers the viewing area at underlay substrate,
Also covering the non-display area at underlay substrate, the thickness of the metallic film of deposition can be 0.2
Um-0.4um, such as, can be 0.3um, carry out photoresist coating, exposure by this metallic film
Light, develop, etch, after degumming process, form metal bridge layer in the viewing area of underlay substrate
510, the non-display area of underlay substrate forms welding backing metal layer 520 simultaneously；
Step S5: being again coated with one layer of insulation film on the underlay substrate complete step S4 (can
Think OC resin material), the insulation film of coating not only covers the viewing area at underlay substrate,
Also cover the non-display area at underlay substrate to be covered by welding backing metal layer 520, insulation film
Thickness can be 1.8um-2.2um, such as, can be 2.0um, by carrying out this insulation film
Exposure, developing process, remove the insulation film on welding backing metal layer upper surface with by welding backing metal
The upper surface of layer is exposed, retains the insulation film contacted with welding backing metal layer section, is not only able to
Form the cover layer 610 for protecting metal bridge layer 510 in the viewing area of underlay substrate, also exist
The non-display area of underlay substrate forms the protective layer 620 covered on welding backing metal layer section, from
And form above-mentioned OGS touch screen.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, relevant
The those of ordinary skill of technical field, without departing from the spirit and scope of the present invention,
Can also make a variety of changes and modification, the technical scheme of the most all equivalents falls within the present invention
Category, the scope of patent protection of the present invention should be defined by the claims.
Claims (11)
1. a touch screen, including underlay substrate, described underlay substrate is provided with welding backing metal
Layer, it is characterised in that be coated with protective layer on the section of described welding backing metal layer.
Touch screen the most according to claim 1, it is characterised in that described underlay substrate quilt
It is divided into viewing area and is positioned at the non-display area of described viewing area periphery, described weld pad
Metal level is positioned at described non-display area, and the viewing area of described underlay substrate is disposed with
Transparent electrode layer, insulating barrier, metal bridge layer and cover layer；
Wherein, described welding backing metal layer and described metal bridge layer are identical material and arrange with layer,
Described protective layer and described cover layer are identical material and arrange with layer.
Touch screen the most according to claim 2, it is characterised in that described underlay substrate
Be additionally provided with on non-display area be positioned at below described welding backing metal layer and with described welding backing metal layer
The supporting layer that pattern is identical, described protective layer also covers on the section of described supporting layer.
Touch screen the most according to claim 3, it is characterised in that described supporting layer and institute
State insulating barrier to be identical material and arrange with layer.
Touch screen the most according to claim 4, it is characterised in that the thickness of described protective layer
Degree is 1.8um-2.2um, and the thickness of described supporting layer is 1.3um-1.7um.
6. according to the arbitrary described touch screen of claim 1-5, it is characterised in that described weld pad
Metal level includes the first metal layer, the second metal level and the 3rd metal level that stacking is arranged, institute
State the second metal level between described the first metal layer and described 3rd metal level, described first
The material of metal level and described 3rd metal level includes molybdenum, the material bag of described second metal level
Include aluminum.
7. a display device, it is characterised in that include arbitrary described the touching of claim 1-6
Touch screen.
8. a manufacture method for touch screen, is included on underlay substrate formation welding backing metal layer,
It is characterized in that, also include being formed the protective layer covered on described welding backing metal layer section.
The manufacture method of touch screen the most according to claim 8, it is characterised in that described
Welding backing metal layer is formed on the non-display area of described underlay substrate, and described method is additionally included in
Transparent electrode layer, insulating barrier, metal bridge layer is sequentially formed on the viewing area of described underlay substrate
And cover layer；
Wherein, the while that described welding backing metal layer and described metal bridge layer being in a patterning processes
Be made, described protective layer and described cover layer make in a patterning processes simultaneously and
Become.
The manufacture method of touch screen the most according to claim 9, it is characterised in that
Also include before forming described welding backing metal layer: shape on the non-display area of described underlay substrate
Become the supporting layer identical with described welding backing metal layer pattern.
The manufacture method of 11. touch screens according to claim 10, it is characterised in that institute
State supporting layer to be made in a patterning processes with described insulating barrier simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374669.6A CN105955542A (en) | 2016-05-31 | 2016-05-31 | Touch screen, manufacturing method of touch screen and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374669.6A CN105955542A (en) | 2016-05-31 | 2016-05-31 | Touch screen, manufacturing method of touch screen and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105955542A true CN105955542A (en) | 2016-09-21 |
Family
ID=56907362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610374669.6A Pending CN105955542A (en) | 2016-05-31 | 2016-05-31 | Touch screen, manufacturing method of touch screen and display device |
Country Status (1)
| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417585A (en) * | 2018-03-12 | 2018-08-17 | 京东方科技集团股份有限公司 | Display base plate and its manufacturing method, display device |
| WO2019029169A1 (en) * | 2017-08-09 | 2019-02-14 | 昆山国显光电有限公司 | Array substrate and manufacturing method thereof, and display panel and manufacturing method thereof |
| CN111708465A (en) * | 2020-07-08 | 2020-09-25 | 武汉华星光电半导体显示技术有限公司 | Touch display device and manufacturing method thereof |
| CN114489366A (en) * | 2020-11-12 | 2022-05-13 | 上海和辉光电股份有限公司 | Touch display panel, display device and electronic equipment |
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| US20130100066A1 (en) * | 2011-10-25 | 2013-04-25 | Texas Instruments Incorporated | Multi-touch capable single layer capacitive touch panel |
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| CN201107767Y (en) * | 2007-11-27 | 2008-08-27 | 胜华科技股份有限公司 | Structure of capacitance type touching control panel joint zone |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019029169A1 (en) * | 2017-08-09 | 2019-02-14 | 昆山国显光电有限公司 | Array substrate and manufacturing method thereof, and display panel and manufacturing method thereof |
| US11362302B2 (en) | 2017-08-09 | 2022-06-14 | Kunshan Go-Visionox Opto-Electronics Co., Ltd. | Array substrate, manufacturing method thereof and display panel |
| CN108417585A (en) * | 2018-03-12 | 2018-08-17 | 京东方科技集团股份有限公司 | Display base plate and its manufacturing method, display device |
| CN108417585B (en) * | 2018-03-12 | 2021-04-13 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof and display device |
| CN111708465A (en) * | 2020-07-08 | 2020-09-25 | 武汉华星光电半导体显示技术有限公司 | Touch display device and manufacturing method thereof |
| CN114489366A (en) * | 2020-11-12 | 2022-05-13 | 上海和辉光电股份有限公司 | Touch display panel, display device and electronic equipment |
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Application publication date: 20160921 |